package collection;

import java.util.*;

public class SortInteger {
    public static void main(String[] args) {
        Random rand=new Random();
        List<Integer> list=new ArrayList<>();
        for(int i=0;i<6;i++){
            list.add(rand.nextInt(100));
        }
        System.out.println("list原数据："+list);

        Collections.sort(list);
        System.out.println("排序后"+list);

        Collections.reverse(list);
        System.out.println("list反转后"+list);
}
}